Convert 45 KPH to MPH with Our Speed Converter Tool

Common Speed Conversions

About Speed Conversion

Speed is the rate at which an object moves. The most common units of speed are:

Kilometers per hour (kph): Used in most countries around the world that follow the metric system.

Miles per hour (mph): Used primarily in the United States and the United Kingdom.

Meters per second (m/s): The SI unit of speed, commonly used in scientific contexts.

Feet per second (ft/s): Used in some engineering applications in the US.

Knots: Used in maritime and aviation contexts, equal to one nautical mile per hour.

Conversion Formulas

KPH to MPH: mph = kph × 0.621371

MPH to KPH: kph = mph × 1.60934

KPH to m/s: m/s = kph × 0.277778

MPH to ft/s: ft/s = mph × 1.46667

KPH to Knots: knots = kph × 0.539957

Did You Know?

300 kph (186.41 mph) is faster than most commercial passenger trains and is comparable to the top speeds of many high-speed trains like the French TGV and Japanese Shinkansen.

The current land speed record is over 1,220 kph (760 mph), achieved by the ThrustSSC, which broke the sound barrier on land.

Conversion History

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